Abstract
Field experiments from 1997 to 1999 examined cotton cv. ‘Coker 312’ that was genetically transformed to tolerate glufosinate. None of the glufosinate treatments caused visible injury to the glufosinate-tolerant cotton, but treatments were lethal to nontransformed or nonexpressing cotton. No glufosinate treatment adversely affected plant height at maturity, total number of nodes, bolls per plant, or boll positions. Glufosinate applications of 0.6 kg ha−1 made at eight stages of growth, ranging from cotyledon stage to 50% open boll, did not adversely affect yield or fiber quality as measured by micronaire or fiber length and strength. Sequential glufosinate applications up to four stages of growth from the zero- to one-leaf stage to the 14- to 15-leaf stage or individual glufosinate applications at 3.3 kg ha−1 made at the two- to three-leaf stage of growth also did not adversely affect yield or fiber quality. Overall yields in these studies were low relative to normal Texas Southern High Plains cotton yield because these studies were conducted using a Coker 312 parental line, which is generally a poor performer in this region. This research indicated that the transformation events for glufosinate tolerance in cotton were successful and the glufosinate-tolerance gene was expressed throughout the growing season. Transformation and field testing of other cotton varieties are needed to improve varietal performance on the Texas Southern High Plains.
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Claims 8
Claim · model-written summary
Glufosinate caused no visible injury to tolerant cotton.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- glufosinate treatmentse0
- Outcome
- visible injurye0
- Direction
- Nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the glufosinate treatments caused visible injury to the glufosinate-tolerant cotton”
Claim · model-written summary
Glufosinate treatments were lethal to nontransformed or nonexpressing cotton.
- Taxon
- cottonGossypium hirsutume0
- Material
- nontransformed or nonexpressing cottone0
- Treatment
- treatmentse0
- Outcome
- lethale0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatments were lethal to nontransformed or nonexpressing cotton”
Claim · model-written summary
Glufosinate did not adversely affect plant height, nodes, bolls or boll positions.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- glufosinate treatmente0
- Outcome
- plant height at maturity, total number of nodes, bolls per plant, or boll positionse0
- Direction
- Noe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No glufosinate treatment adversely affected plant height at maturity, total number of nodes, bolls per plant, or boll positions”
t0“cotton”
Claim · model-written summary
Glufosinate at 0.6 kg ha−1 across eight growth stages did not adversely affect yield or fiber quality.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- cotyledon stage to 50% open bolle0
- Treatment
- Glufosinate applications of 0.6 kg ha−1e0
- Outcome
- yield or fiber qualitye0
- Direction
- did not adversely affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glufosinate applications of 0.6 kg ha−1 made at eight stages of growth, ranging from cotyledon stage to 50% open boll, did not adversely affect yield or fiber quality as measured by micronaire or fiber length and strength”
t0“cotton”
Claim · model-written summary
Sequential or high rate glufosinate applications did not adversely affect yield or fiber quality.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Sequential glufosinate applications up to four stages of growthe0
- Outcome
- yield or fiber qualitye0
- Direction
- did not adversely affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sequential glufosinate applications up to four stages of growth from the zero- to one-leaf stage to the 14- to 15-leaf stage or individual glufosinate applications at 3.3 kg ha−1 made at the two- to three-leaf stage of growth also did not adversely affect yield or fiber quality”
t0“cotton”
Claim · model-written summary
Overall yields were low relative to normal regional cotton yields.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- Overall yieldse0
- Direction
- lowe0
- Comparator
- normal Texas Southern High Plains cotton yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall yields in these studies were low relative to normal Texas Southern High Plains cotton yield”
Claim · model-written summary
The authors concluded that the tolerance transformation succeeded and the gene was expressed throughout the season.
- Taxon
- cottonGossypium hirsutume0
- Gene
- glufosinate-tolerance genee0
- Outcome
- glufosinate-tolerance gene was expressed throughout the growing seasone0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transformation events for glufosinate tolerance in cotton were successful and the glufosinate-tolerance gene was expressed throughout the growing season”
Claim · model-written summary
The authors recommend transformation and field testing of other cotton varieties to improve regional varietal performance.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- Transformation and field testing of other cotton varietiese0
- Setting
- Texas Southern High Plainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transformation and field testing of other cotton varieties are needed to improve varietal performance on the Texas Southern High Plains”
The same questions in other papers
glufosinate · quality: grain · Gossypium hirsutum (cotton)Results differ
5 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
4 papers more in this group
See all 8 papers →glufosinate · crop injury · Gossypium hirsutum (cotton)Results differ
13 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- no effect
12 papers more in this group
See all 16 papers →glufosinate · yield · Gossypium hirsutum (cotton)Results differ
9 papers in the same direction as this paper · 8 in the opposite direction
- positive
- no effect
- no effect
14 papers more in this group
See all 18 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.